TheBESS Delivery & Service Engineer (Utility Scale)is responsible for the execution and lifecycle support oflarge-scale battery energy storage projectsafter the project is secured by the sales and presales teams.The role manages thetechnical delivery, commissioning, and operational & maintenance supportof utility-scale BESS projects, working closely with EPC contractors, grid operators, and project stakeholders.Key Responsibilities1. Project Handover from Sales / PresalesTake over BESS projects from thesales and presales teamsafter contract signing.Review technical proposals, system configurations, and service scope.Confirm system design and project requirements with internal teams and customers including: System design, Grid requirements, Performance guarantees, Project schedules，etcEnsure project milestones are achieved according to schedule and budget.2. Project Commissioning Planning and ExecutionManage thefull lifecycle delivery of utility-scale BESS projects.Coordinate with EPC contractors, integrators, and equipment suppliers. Guide EPC for the equipment unloading, installation etc.Ensure compliance with technical specifications, grid requirements, and safety standards.Develop and execute commissioning plans, procedures, and checklists for BESS projects.Conduct commissioning for battery racks, BMS (Battery Management System), PCS (Power Conversion System), EMS (Energy Management System) and MV transformer.Validate integration of electrical, control,



and communication systems.Conduct grid compliance and performance verification testsWork with grid operators and technical partners to complete system integration and SAT.Work with technical support teams to resolve technical issues during commissioning.Ensure successful handover to operations.4. Operations & Maintenance Service ManagementCarry out preventive and corrective maintenance on BESS/PCS/EMSPerform remote operations to support maintenance and fault resolutionConduct site inspections, diagnostics, and testing using specialist equipmentEnsure strict compliance with Health & Safety standards and HSE regulations in related countriesSupervise subcontractors and ensure quality and compliance of third‑party worksSupport commissioning, upgrades, and major repairsReview technical documentation and contribute to maintenance procedures, RAMS, and method statementsLiaise with OEMs and suppliers on maintenance processes and technical clarificationsSupport annual maintenance planning for BESS assetsProvide O&M Training to customer O&M team and subcontractorQualificationsDegree inElectrical Engineering, Power Systems, Energy Engineering, or related field.2–5 years’ experiencein utility-scale renewable energy or power infrastructure projects.Necessary Certifications to work on siteExperience withlarge-scale BESS, solar + storage, or grid infrastructurepreferred.Strong understanding of Grid integration, Power systems, Energy management systems, High‑voltage systems, HSESkillsStrong technical knowledge ofBESS, LV systems, inverters, EMSKnowledge of grid compliance and power system integrationAbility to manage multiple technical stakeholders

📌 Bess Delivery & Service Engineer – Utility Scale Projects (Madrid)
🏢 Longi Solar
📍 Madrid